1543412240 has 80 divisors (see below), whose sum is σ = 3806113536. Its totient is φ = 580800000.

The previous prime is 1543412197. The next prime is 1543412267. The reversal of 1543412240 is 422143451.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105365 + ... + 119115.

Almost surely, 2^1543412240 is an apocalyptic number.

1543412240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1543412240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1903056768).

1543412240 is an abundant number, since it is smaller than the sum of its proper divisors (2262701296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1543412240 is a wasteful number, since it uses less digits than its factorization.

1543412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13848 (or 13842 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1543412240 is about 39286.2856477932. The cubic root of 1543412240 is about 1155.6526336643.

Adding to 1543412240 its reverse (422143451), we get a palindrome (1965555691).

The spelling of 1543412240 in words is "one billion, five hundred forty-three million, four hundred twelve thousand, two hundred forty".